Place pie crust into the bottom of a 9″ pie plate.
Thinly slice apples no more than 1/4″ thick. Place in a large bowl and toss with cinnamon, nutmeg, and sugar. Tightly layer apples on top of the pie crust.
To make the crumb topping, stir together brown sugar and flour in a small bowl. Using a fork or pastry cutter, cut butter into flour mixture until large crumbs are formed. Sprinkle crumb topping over apples.
Bake pie at 450°F for 10 minutes. Turn the oven down to 350°F and continue baking until top is golden and filling bubbles, about 45 minutes.
Remove pie from the oven and let cool before serving.
*You can use a mixture of apples. Our family likes Rome, Macintosh, Honeycrisp, Pink Lady, and Granny Smith varieties for pies. ** Use cold coconut oil for vegan